GT-King Pro, problem with Amazon Prime

[Ac2n]

Hello, I have a Beelink GT-King Pro box which uses the latest official 913PO firmware connected via HDMI to my AVR, when I use the Amazon Prime aplliction I only have access to stereo sound, while the beelink gt- King pro is quite capable of reproducing sound in dolby.
Moreover, by starting the beelink gt-king pro under Coreelec, I can have access to the sound in dolby 5.1 ...
Is there a particular setting to have in android to have the sound in dolby 5.1?
I wonder if we should not make some modifications in the build.prop of which here is a copy
"

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=PPR1.180610.011
ro.build.display.id=galilei-userdebug 9 PPR1.180610.011 20200915 test-keys
ro.build.version.incremental=20200915
ro.build.version.sdk=28
ro.build.version.preview_sdk=0
ro.build.version.codename=REL
ro.build.version.all_codenames=REL
ro.build.version.release=9
ro.build.version.security_patch=2018-08-05
ro.build.version.base_os=
ro.build.version.min_supported_target_sdk=17
ro.build.date=Tue Sep 15 14:37:07 CST 2020
ro.build.date.utc=1600151827
ro.build.type=userdebug
ro.build.user=xk
ro.build.host=AZW
ro.build.tags=test-keys
ro.build.flavor=galilei-userdebug
ro.build.system_root_image=true
ro.product.model=GTKing PRO
ro.product.brand=Amlogic
ro.product.name=galilei
ro.product.device=galilei
# ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete,
# use ro.product.cpu.abilist instead.
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist=armeabi-v7a,armeabi
ro.product.cpu.abilist32=armeabi-v7a,armeabi
ro.product.cpu.abilist64=
ro.product.manufacturer=AZW
ro.product.locale=en-US
ro.wifi.channels=
# ro.build.product is obsolete; use ro.product.device
ro.build.product=galilei
# Do not try to parse description, fingerprint, or thumbprint
ro.build.description=galilei-userdebug 9 PPR1.180610.011 20200915 test-keys
ro.build.fingerprint=Amlogic/galilei/galilei:9/PPR1.180610.011/20200915:userdebug/test-keys
ro.build.characteristics=mbx,nosdcard,device
# end build properties

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.bionic.ld.warning=1
ro.art.hiddenapi.warning=1
ro.treble.enabled=true
persist.sys.dalvik.vm.lib.2=libart.so
dalvik.vm.isa.arm.variant=cortex-a9
dalvik.vm.isa.arm.features=default
dalvik.vm.lockprof.threshold=500
net.bt.name=Android
dalvik.vm.stack-trace-dir=/data/anr
ro.build.expect.bootloader=01.01.180822.152145

# begin fota properties
ro.fota.platform=AmlogicS922X_9.0
ro.fota.type=box
ro.fota.app=5
ro.fota.battery=1
ro.fota.screen=1
ro.fota.display=1
ro.fota.id=mac
ro.fota.no_touch=1
ro.fota.oem=AZWS922X_9.0
ro.fota.device=GTKing PRO
ro.fota.version=galilei-userdebug 9 PPR1.180610.011 20200915 test-keys_20200915-1442
# end fota properties
ro.expect.recovery_id=0x5db8e435a4c54c7e1d54b3f53f 47fbbc69e9b7c3000000000000000000000000
"
If you have ideas and especially a solution, please share ...
Have a good day

[darkstar]

Did you tried custom android roms?

[Ac2n]

darkstar I just tried the Spartan ATV rom but the ATV version of Amazon Prime did not allow you to launch movie playback, having to use the mobile version of Amazon prime is suddenly the same results, the sound in dolby did not Accessible..?
I have not tested other custom rom ..
Do you manage to have the sound in dolby 5.1 with the gt-king pro and Amazon prime on android ?

[mo123]

darkstar I just tried the Spartan ATV rom but the ATV version of Amazon Prime did not allow you to launch movie playback, having to use the mobile version of Amazon prime is suddenly the same results, the sound in dolby did not Accessible..?
I have not tested other custom rom ..
Do you manage to have the sound in dolby 5.1 with the gt-king pro and Amazon prime on android ?

Only Google Certified AndroidTV devices can use the Amazon Prime ATV app and also have Dolby Digital sound.
The mobile version only supports stereo sound since phones aren't built with Dolby sound certification.
You also need Microsoft PlayReady DRM which is only supported on official AndroidTV devices to use the ATV version.

[Ac2n]

Hello and thank you mo123 is it really possible to have access to Dolby 5.1 only with AndroidTV ?
However on the page below we can see that it is normally possible to have Dolby 5.1 and more on certain devices ..?
Amazon.com Help: Mobile Devices with the Prime Video App
If anyone knows a workaround or a build that allows to have the sound in dolby 5.1 on android I am interested because the solution of going through Coreelec with the Sandmann Add-on for Prime is not very functional. ..
Thanks in advance..

[Anando]

Android version 8.1, kernel version 3.14.29 , build number p281 userdebug 8.1 NHG47L 20200915 test-keys
I need (20200915 firmware)
Pls Help Me

[mo123]

Are you spamming?
You posted the same in the TX3Mini thread.